GMS81C1408

Features:

• 4K/8K Bytes On-chip Program Memory
• 192 Bytes of On-chip Data RAM (Included stack memory)
• Instruction Cycle Time:
     - 250nS at 8MHz
• 23 Programmable I/O pins (LED direct driving can be source and sink)
• 2.2V to 5.5V Wide Operating Range
• One 8-bit A/D Converter
• One 8-bit Basic Interval Timer
• Four 8-bit Timer / Counters
• Two 10-bit High Speed PWM Outputs
• Watchdog timer (can be operate with internal RC-oscillation)
• One 8-bit Serial Peripheral Interface
• Twelve Interrupt sources
     - External input: 4
     - A/D Conversion: 1
     - Serial Peripheral Interface: 1
     - Timer: 6
• One Programmable Buzzer Driving port
     - 500Hz ~ 130kHz
• Oscillator Type
     - Crystal
     - Ceramic Resonator
• Noise Immunity Circuit
     - Power Fail Processor
• Power Down Mode
     - STOP mode
     - Wake-up Timer mode


Pinout




Specifications

Supply voltage ........................................... -0.3 to +6.0 V
Storage Temperature ..................................-40 to +125
Voltage on any pin with respect to Ground (VSS)
............................................................... -0.3 to VDD+0.3
Maximum current out of VSS pin ...........................200 mA
Maximum current into VDD pin ..............................150 mA
Maximum current sunk by (IOL per I/O Pin) ............25 mA
Maximum output current sourced by (IOH per I/O Pin)
................................................................................15 mA
Maximum current (IOL) ......................................150 mA
Maximum current (IOH)..................................... 100 mA


Description

The GMS81C1404 and GMS81C1408 are an advanced CMOS 8-bit microcontroller with 4K/8K bytes of ROM. The Hynix semiconductor's GMS81C1404 and GMS81C1408 are a powerful microcontroller which provides a highly flexible and cost effective solution to many small applications such as controller for battery charger. The GMS81C1404 and GMS81C1408 provide the following standard features: 4K/8K bytes of ROM, 192 bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10-bit high speed PWM output, programmable buzzer driving port, 8-bit serial communication port, on-chip oscillator and clock circuitry. In addition, the GMS81C1404 and GMS81C1408 supports power saving modes to reduce power consumption.